Factors affecting tolerance of strawberries to black vine weevil larvae
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Factors affecting tolerance of strawberries to black vine weevil larvae by Wesley Donald Hazen

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Published .
Written in English

Subjects:

  • Strawberry-weevil.

Book details:

Edition Notes

Statementby Wesley Donald Hazen.
The Physical Object
Paginationix, 53 leaves, bound :
Number of Pages53
ID Numbers
Open LibraryOL16839167M

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Includes. Black vine weevil (Otiorhynchus sulcatus) Rough strawberry root weevil (O. rugosostriatus) Strawberry root weevil (O. ovatus). Pest description and crop damage Black vine weevil (BVW) is probably the most common weevil to infest strawberries, but the strawberry root weevil (SRW) and rough strawberry root weevil (RSRW) are also pests. Adult weevils are mm long, depending on .   Strawberry root weevils and black vine weevils attack a wide array of plants from woody ornamentals in the urban landscape to commercial cane berry crops, including raspberries, blackberries, and strawberries. “Strawberry root weevil and black vine weevil are very closely related to alfalfa snout beetle, and, like alfalfa snout beetle, these.   5 Differences in cultivar susceptibility to vine weevil in the field may involve interactions between the palatability and nutritional value of foliage, which influence fecundity and egg placement, and the tolerance of strawberry plants to larval feeding, determined by root biomass. Healthy plants can tolerate feeding from 1- 2 larvae per plant. Black vine weevil larvae cause more damage than strawberry root weevil larvae, therefore thresholds should be higher for strawberry root weevil larvae. Assessment of leaf notching in late summer could also be used to predict problems with black vine weevil the following spring.

The major cycle for egg production occurs with the May-June emergence of summer adults that over wintered as larvae through the winter while grazing on strawberry roots. The main ovipositional cycle for the rough strawberry root weevil occurs about a month after peak egg laying by the black vine and strawberry root weevils. Factors affecting the control of ). After infesting potted and field strawberries with black vine weevil larvae, Lola-Luz & Downes () then applied three soil drenches using nematodes. Gardeners with vine weevil should keep up their guard because stopping control measures after the apparent disappearance of the weevil can allow numbers to build up again. Non-Pesticide control On mild spring or summer evenings inspect plants and walls by torchlight and pick off the adult weevils. Transgenic strawberry lines constitutively expressing the cowpea protease trypsin inhibitor (CpTi) gene exhibited tolerance against vine weevil (Otiorhynchus sulcatus) and were less preferred for feeding by weevil under greenhouse and field conditions .

A new project is scheduled to be reviewed in under the OSQR review. Year 2 () 1. Improve acoustic detection system for black vine weevil larvae and train nursery pest scouts in its usage. 2. Determine the effects of nursery soil mixes on the efficacy of labeled chemical pesticides and biological pesticides on black vine weevil larvae. 3. INTRODUCTION. Black vine weevil, Otiorhynchus sulcatus, (F.) Coleoptera:Curculionidae is an important pest of many economic important plants mostly strawberries, raspberries and rhododendrons. The larvae and adults attack on the roots of many annual perennial ornamental and soft fruit plants. Young larvae or grubs are creamy white or dirty white to brown, have no legs and feed on fine roots. Adult vine weevils are black and about 1cm long. They lay eggs in soil from March to September, which hatch into white, C-shaped grubs that feed voraciously. How to spot vine weevil damage. You know you’ve got vine weevils in the garden if you spot small, irregular notches around the outside of leaves. This is caused by adult beetles, which.   Leaf miner larvae; Other Zucchini Insects. Aphids are one of the most common of the pests that affect zucchini plants. They are small winged insects that tend to mass together and leave sticky honeydew on leaves. Often ants are seen in tandem with aphids because ants feed on the honeydew. Zucchini aphids aren’t the only pest in town, though.